WO2021064896A1 - スピーカ装置およびスピーカ装置の製造方法 - Google Patents

スピーカ装置およびスピーカ装置の製造方法 Download PDF

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Publication number
WO2021064896A1
WO2021064896A1 PCT/JP2019/038925 JP2019038925W WO2021064896A1 WO 2021064896 A1 WO2021064896 A1 WO 2021064896A1 JP 2019038925 W JP2019038925 W JP 2019038925W WO 2021064896 A1 WO2021064896 A1 WO 2021064896A1
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WO
WIPO (PCT)
Prior art keywords
plate portion
front plate
speaker device
rear plate
speaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/038925
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English (en)
French (fr)
Japanese (ja)
Inventor
大橋　力
徳枝 河合
エミ 仁科
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Action Research Co Ltd
Original Assignee
Action Research Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Action Research Co Ltd filed Critical Action Research Co Ltd
Priority to PCT/JP2019/038925 priority Critical patent/WO2021064896A1/ja
Priority to JP2021550840A priority patent/JPWO2021064896A1/ja
Publication of WO2021064896A1 publication Critical patent/WO2021064896A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Definitions

  • the present invention relates to a speaker device and a method for manufacturing the speaker device.
  • a speaker that converts an electric signal into sound and outputs it is known.
  • a speaker for a studio monitor that combines a woofer, a scooka, and a super tweeter that can reproduce various sound ranges from environmental sounds to musical instrument sounds with high fidelity is known (see, for example, Non-Patent Document 1). ..
  • the performance of the speaker depends on the performance of the housing (enclosure) to which the speaker unit is attached, in addition to the performance of the speaker unit used.
  • the speaker housing vibrates due to the reaction of the diaphragm of the speaker unit, and the sound is reflected in the internal air chamber to generate a standing wave. Such vibrations and standing waves may cause deterioration of sound quality.
  • the housing is made of a hard material, and the walls of the housing are thickened to ensure strength, and a sound absorbing material or the like is used. Was absorbing the standing wave. Therefore, speakers with higher performance tend to be larger and heavier, and it has been difficult to reduce the size while maintaining the performance.
  • an object of the present invention is to realize a speaker device capable of reproducing a sound having a wider band frequency with high fidelity in a compact and lightweight configuration. ..
  • the front plate portion provided with one or more speaker units, the rear plate portion facing the front plate portion via the air chamber, and the front plate portion. It has a plurality of surfaces provided between the rear plate portion, includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion, and the side plate portion has a thickness of 2 mm or less.
  • a speaker device made of a plate.
  • the side plate portion may form the plurality of surfaces by bending a plate-shaped member.
  • the side plate portion may have a convex reinforcing portion extending in a direction from the front plate portion to the rear plate portion on one or more of the plurality of surfaces.
  • the side plate portion may have a plurality of the convex reinforcing portions on one or a plurality of the plurality of surfaces.
  • the side plate portion may be formed by pressing from a metal plate-like material.
  • a columnar member fixed at the second fixed position may be further provided.
  • the front plate portion and the rear plate portion are arranged in parallel, and the distance between the first fixed position and the second fixed position is equal to the distance between the front plate portion and the rear plate portion. May be good.
  • the front plate portion has a plurality of the first fixing positions for adjusting the fixing position of the columnar member
  • the rear plate portion has a plurality of the said head plate portions for adjusting the fixing position of the columnar member. It may have a plurality of the second fixed positions corresponding to the first fixed position.
  • the front plate portion may further have an opening that penetrates from the first surface on the side where the speaker unit outputs sound to the second surface on the side opposite to the first surface.
  • the speaker unit may include a piezoelectric actuator.
  • the piezoelectric actuator is fixed to a through hole provided in the front plate portion, and at least a part of the piezoelectric actuator is placed on a second surface opposite to the first surface on the side where the piezoelectric actuator outputs sound. It may further have a protective portion to cover.
  • the front plate portion provided with one or more speaker units, the rear plate portion facing the front plate portion via the air chamber, and the front plate portion. It has a plurality of surfaces provided between the rear plate portion, includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion, and the side plate portion is the plurality of surfaces.
  • a speaker device having a convex reinforcing portion extending in a direction from the front plate portion to the rear plate portion on two or more of the surfaces.
  • the front plate portion provided with one or more speaker units, the rear plate portion facing the front plate portion via the air chamber, and the front plate portion. It has a plurality of surfaces provided between the rear plate portion, includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion, and from the front plate portion to the rear plate portion.
  • a columnar structure that extends in a direction parallel to the direction in which one end is fixed at the first fixed position of the front plate portion and the other end is fixed at the second fixed position of the rear plate portion.
  • a speaker device further comprising a member.
  • a step of forming a front plate portion and a rear plate portion provided at a position facing the front plate portion via an air chamber, and a press working from a metal plate-like material are performed.
  • a method for manufacturing a speaker device comprising a step of attaching one or a plurality of speaker units to the front plate portion and a step of attaching the front plate portion and the rear plate portion to the side plate portion.
  • a convex reinforcing portion extending in a direction from the front plate portion toward the rear plate portion on one or more of the plurality of surfaces of the side plate portion by press working. May be formed.
  • a speaker device capable of reproducing a sound having a wider band frequency with high fidelity can be realized with a compact and lightweight configuration.
  • a configuration example of the speaker device 100 according to the present embodiment is shown.
  • a configuration example of a cross section of the speaker device 100 according to the present embodiment is shown.
  • the first example of the detection result of the sound output by the speaker apparatus 100 which concerns on this embodiment is shown.
  • a second example of the sound detection result output by the speaker device 100 according to the present embodiment is shown.
  • An example of the manufacturing flow of the speaker apparatus 100 according to this embodiment is shown.
  • FIG. 1 shows a configuration example of the speaker device 100 according to the present embodiment.
  • the speaker device 100 converts the input signal into sound and outputs it. In other words, the speaker device 100 converts electrical vibration into physical vibration and outputs it.
  • the speaker device 100 reduces the occurrence of waveform distortion, noise, etc., and raises the sound of a wider band frequency. Reproduce with fidelity.
  • FIG. 1 shows an example of the speaker device 100 for the left side when viewed from the surface for outputting sound and the speaker device 100R for the right side when viewed from the side opposite to the surface for outputting sound.
  • the speaker device 100R for the right side and the speaker device 100L for the left side may have the same shape, and may have a symmetrical shape instead.
  • Each speaker device 100 includes a front plate portion 110, a rear plate portion 120, and a side plate portion 130.
  • the front plate portion 110 is provided with one or more speaker units 140.
  • FIG. 1 shows an example in which the speaker unit 140 includes a woofer 142, a scooka 144, and a tweeter 146. It is desirable that the speaker unit 140 is configured so as to be able to reproduce sound having a frequency in the audible band as a whole. Further, it is more desirable that the speaker unit 140 is configured to be able to reproduce a sound including a frequency in the audible band and a frequency higher than the audible band as a whole.
  • the surface on the side where the speaker unit 140 outputs sound is the first surface, and the surface on the side opposite to the first surface is the second surface.
  • the front plate portion 110 further has an opening 112 that penetrates from the first surface to the second surface.
  • a plurality of openings 112 may be formed in the front plate portion 110. Since the opening 112 is formed in the front plate portion 110, the speaker device 100 is also configured as a bass reflex type speaker that amplifies a predetermined low frequency band. Further, the front plate portion 110 has one or a plurality of first fixed positions 114. The first fixed position 114 will be described later.
  • the rear plate portion 120 faces the front plate portion 110 via the air chamber.
  • the air chamber is used as the internal space of the speaker device 100.
  • the shape of the outer circumference of the rear plate portion 120 is, for example, the same shape as that of the front plate portion 110.
  • the front plate portion 110 and the rear plate portion 120 are formed of plate-shaped members. Further, the rear plate portion 120 has one or a plurality of second fixed positions 122. The second fixed position 122 will be described later.
  • the rear plate portion 120 and the front plate portion 110 may be arranged in parallel, or instead, the rear plate portion 120 and the front plate portion 110 may be inclined to face each other at a predetermined angle.
  • the side plate portion 130 has a plurality of surfaces provided between the front plate portion 110 and the rear plate portion 120, and forms an air chamber together with the front plate portion 110 and the rear plate portion 120.
  • the side plate portion 130 is formed by bending a plate-shaped member to form a plurality of surfaces.
  • FIG. 1 shows an example in which the side plate portion 130 has four surfaces and is combined with the front plate portion 110 and the rear plate portion 120 to form a cubic air chamber.
  • the side plate portion 130 is provided with, for example, an attachment portion to which the front plate portion 110 and the rear plate portion 120 are attached. Note that FIG.
  • the number of surfaces on which the side plate portion 130 forms an air chamber is a number corresponding to the quadrangular shape of the front plate portion 110 and the rear plate portion 120, but the number is limited to this. There is nothing.
  • the shape of the side plate 130 may be formed independently of the shape of the front plate 110 and / or the rear plate 120, and in this case, the number of surfaces of the side plate 130 is also the front plate 110 and / or the rear. It may be irrelevant to the shape of the plate portion 120.
  • the side plate portion 130 is formed of a plate-shaped member.
  • the side plate portion 130 is formed from, for example, a metal plate-like material by press working or the like.
  • the side plate portion 130 may be formed by bending a plate-shaped member.
  • the front plate portion 110, the rear plate portion 120, and the side plate portion 130 are made of, for example, a metal material.
  • the front plate portion 110, the rear plate portion 120, and the side plate portion 130 may be made of a material such as wood or resin.
  • the front plate portion 110, the rear plate portion 120, and the side plate portion 130 are formed to be thin enough to resonate and vibrate at a frequency included in the sound generated by the speaker device 100.
  • the side plate portion 130 is formed with a thin plate thickness that can be formed by bending. Further, it is desirable that the side plate portion 130 is formed by bending by press working.
  • the plate thickness that can be formed by bending by press working or the like is, for example, 0.1 mm or more and 10 mm or less.
  • the thickness of the side plate portion 130 may be 0.3 mm or more and 5 mm or less. Further, the thickness of the side plate portion 130 may be 0.5 mm or more and 3 mm or less.
  • the side plate portion 130 is formed of a plate having a thickness of 2 mm or less. It is desirable that at least a part of the front plate portion 110 and the rear plate portion 120 is formed to have a thickness equivalent to the thickness of such a side plate portion 130.
  • the speaker device 100 according to the above embodiment is different from the conventional speaker, and the side plate portion 130 is made thin enough to vibrate by resonance. Further, the front plate portion 110 and the rear plate portion 120 may be similarly thinned. The cross-sectional structure of the housing of the speaker device 100 will be described below.
  • FIG. 2 shows an example of a cross-sectional perspective view of the speaker device 100 according to the present embodiment.
  • FIG. 2 shows an example of a cross-sectional perspective view when the housing of the speaker device 100 is cut by the surface including the AA'line shown in FIG.
  • the side plate portion 130 has a convex reinforcing portion 132 extending in a direction from the front plate portion 110 to the rear plate portion 120 on one or more of the plurality of surfaces. Further, the side plate portion 130 may have a plurality of such convex reinforcing portions 132 on one or a plurality of surfaces among the plurality of surfaces.
  • FIG. 2 shows an example in which the side plate portion 130 has a plurality of convex reinforcing portions 132 on each of the four surfaces forming the air chamber.
  • the convex reinforcing portion 132 functions as a reinforcing member for reinforcing the plate-shaped member, and is a convex member provided in a direction substantially perpendicular to the plane of the reinforcing member.
  • the convex reinforcing portion 132 is also formed by press working.
  • one convex reinforcing portion 132 is formed on one surface.
  • the strength of the side plate portion 130 can be sufficiently maintained.
  • the convex reinforcing portion 132 further has a function of diffusing the vibration of the sound generated by the speaker device 100 on the surface on which the convex reinforcing portion 132 is provided.
  • a convex reinforcing portion 132 resembles the function of a bus bar or the like provided on, for example, a violin, a cello, or the like.
  • the convex reinforcing portion 132 having such a function is formed on two or more of the plurality of surfaces forming the air chamber.
  • the convex reinforcing portion 132 may be formed on all the surfaces of the plurality of surfaces forming the air chamber. Further, it is more desirable that a plurality of convex reinforcing portions 132 are formed on at least one surface.
  • the side plate portion 130 is provided with a plurality of convex reinforcing portions 132 on a plurality of surfaces, which is sufficient in number or more to maintain the strength. As a result, the vibration of the sound can be diffused to the entire housing including the side plate portion 130.
  • the convex reinforcing portion 132 may be provided on the front plate portion 110 and / or the rear plate portion 120.
  • the speaker device 100 further includes a columnar member 150.
  • the columnar member 150 extends in a direction parallel to the direction from the front plate portion 110 toward the rear plate portion 120, and one end thereof is fixed to the first fixed position 114 of the front plate portion 110, and the other end portion Is fixed at the second fixed position 122 of the rear plate portion 120.
  • the first fixing position 114 and the second fixing position 122 may be, for example, through holes or the like, and in this case, the columnar member 150 is fixed by screws or the like.
  • the columnar member 150 has a function of transmitting the vibration of the front plate portion 110 to the rear plate portion 120 and / or transmitting the vibration of the rear plate portion 120 to the front plate portion 110. Since the speaker device 100 has the columnar member 150, the vibration generated in the front plate portion 110 or the rear plate portion 120 is transmitted to the other, so that the vibration phases of the front plate portion 110 and the rear plate portion 120 are changed and reproduced. You can adjust the tone and volume of the sound. For example, in a conventional speaker, it is possible to reduce the vibration of the housing whose phase is inverted, which is generated by the reaction of the diaphragm of the speaker unit. Further, for example, it can be optimized for a tone color and volume suitable for the sound to be reproduced. As a result, the speaker device 100 can generate powerful sound with better reproducibility as compared with, for example, a conventional speaker of the same size.
  • the front plate portion 110 is provided with a plurality of first fixed positions 114 for adjusting the fixed positions of the columnar member 150.
  • the rear plate portion 120 is provided with a plurality of second fixed positions 122 corresponding to the plurality of first fixed positions 114 for adjusting the fixed positions of the columnar member 150.
  • the columnar member 150 may be attached with a screw with a spring or the like. Further, the columnar member 150 may be configured so that the length can be adjusted. As a result, the columnar member 150 is attached to the speaker device 100 as a member whose tension can be adjusted. A plurality of columnar members 150 may be provided in one speaker device 100.
  • 1 and 2 show an example in which the front plate portion 110 and the rear plate portion 120 are arranged in parallel.
  • the distance between the first fixed position 114 and the second fixed position 122 is substantially equal to the distance between the front plate portion 110 and the rear plate portion 120.
  • the columnar member 150 has a length substantially equal to the distance between the front plate portion 110 and the rear plate portion 120, and connects the front plate portion 110 and the rear plate portion 120.
  • the speaker device 100 is formed with a thickness such that the front plate portion 110, the rear plate portion 120, and the side plate portion 130 are formed by press working, and thus is unique to the housing. Generate vibration. Further, since the speaker device 100 has a convex reinforcing portion 132 on each of the surfaces forming the air chamber, such natural vibration is generated in the entire housing. Since the speaker device 100 is further provided with a columnar member 150 connecting the front plate portion 110 and the rear plate portion 120, it is suitable for reproducing a sound having a natural vibration such as a sound box such as a violin or a cello. It can be a housing.
  • Such a speaker device 100 operates so that the entire body including the housing sounds like a musical instrument based on the sound vibration driven by the speaker unit 140. In this way, since the speaker device 100 makes the entire device sound like a musical instrument, it does not have to function to suppress vibration or the like of a specific frequency component like a conventional speaker. Therefore, the speaker device 100 can reproduce a sound faithful to the original sound without increasing the size of the housing. Further, the speaker device 100 preferably has a thin housing in order to vibrate the housing positively, whereby the weight of the entire housing can be reduced.
  • FIG. 3 shows a first example of the sound detection result output by the speaker device 100 according to the present embodiment.
  • FIG. 3 shows an example of the result of measuring the vibration of the front plate portion 110 by bringing the microphone into contact with the front plate portion 110 of the speaker device 100.
  • the horizontal axis of FIG. 3 indicates the frequency, and the vertical axis indicates the relative value of the vibration intensity on the logarithmic axis.
  • FIG. 3 shows the detection result of the sound output by a known speaker as a comparison target.
  • the speaker has two 36 cm subwoofers, two 25 cm woofers, one horn-type tweeter, and two diamond domes in a housing having a main body size of 1200 mm (width) x 950 mm (height) x 582 mm (depth).
  • a super tweeter is provided, and the total weight per channel (one channel) is 200 kg or more, and the details are published in Non-Patent Document 1.
  • FIG. 4 shows a second example of the sound detection result output by the speaker device 100 according to the present embodiment.
  • FIG. 4 shows an example of the result of measuring the frequency characteristics by detecting the sound at a position approximately 1 m away from the speaker device 100.
  • the horizontal axis of FIG. 4 indicates the frequency, and the vertical axis indicates the relative value of the signal strength of the voice signal on the logarithmic axis.
  • the results of performing the same measurement using the same known speaker as in FIG. 3 are shown as comparison targets.
  • FIGS. 3 and 4 show an example of the measurement result of the speaker device 100 formed with a volume of about 1/100 or less and a weight of about 1/30 or less as compared with a large and heavy known speaker. From FIG. 3, it can be seen that the vibration intensity of the housing surface is about 40 dB larger than that of the known speaker, despite the small and lightweight speaker device 100. Further, from FIGS. 3 and 4, the spectral shape of the frequency characteristic of the speaker device 100 is about the same as that of a high-performance speaker for a studio monitor, and the original sound can be faithfully reproduced to the same extent as a known speaker. You can also see that.
  • the speaker device 100 since the thin side plate portion 130 that can be formed by bending vibrates greatly and can reverberate in the entire housing, it can be seen that the frequency band component effective as music can be output beautifully. In this way, by utilizing the resonance vibration of the housing itself, the speaker device 100 can be a large housing having a volume of several tens of times or more even if it is a small housing such as a bookshelf type. It can reproduce bass sounds comparable to subwoofers.
  • the speaker device 100 may further include an amplifier circuit for amplifying an electric signal, a filter circuit for reducing unnecessary signal components, and the like.
  • one or a plurality of speaker units 140 provided in the speaker device 100 may include a piezoelectric actuator.
  • the piezoelectric actuator is included in the speaker unit 140 as a tweeter 146.
  • the speaker device 100 can be configured as a smaller and lighter device.
  • by providing the piezoelectric actuator it is possible to reproduce a sound having a frequency higher than that in the audible band.
  • FIGS. 3 and 4 are examples of sounds output from the speaker device 100 provided with such an amplifier circuit, a filter circuit, and a piezoelectric actuator.
  • the speaker device 100 naturally vibrates the housing in response to the reproduced sound, the pressure inside the air chamber tends to be higher than the pressure inside the air chamber of a known speaker. .. Due to such pressure, unnecessary resonance may occur in at least a part of the speaker unit 140. Therefore, in order to reduce such resonance, it is desirable that the speaker unit 140 is further provided with a cover member that covers at least a part of the speaker unit 140.
  • the piezoelectric actuator when the speaker unit 140 is provided with a piezoelectric actuator, the piezoelectric actuator is small and lightweight, so that it may physically resonate according to the pressure in the air chamber. Therefore, while the piezoelectric actuator is fixed to the through hole provided in the front plate portion 110, at least a part of the piezoelectric actuator is placed on the second surface opposite to the first surface on the side where the piezoelectric actuator outputs sound. It may further have a protective portion to cover. As a result, it is possible to prevent the pressure in the air chamber from being directly transmitted to the piezoelectric actuator and reduce the occurrence of an unnecessary resonance phenomenon.
  • the speaker device 100 according to the present embodiment described above can be easily assembled and manufactured because the side plate portion 130, which is a part of the housing, can be formed from a single plate-shaped material.
  • FIG. 5 shows an example of the manufacturing flow of the speaker device 100 according to the present embodiment.
  • the front plate portion 110 and the rear plate portion 120 provided at a position facing the front plate portion 110 via the air chamber are formed (S410).
  • the front plate portion 110 and the rear plate portion 120 may have the same thickness as the side plate portion 130, and may be formed to be thicker than the thickness of the side plate portion 130 instead.
  • the front plate portion 110 and the rear plate portion 120 have a thickness of about 1 cm as an example.
  • the front plate portion 110 is formed with a through hole to which the speaker unit 140 is attached, an opening 112 for forming a bass reflex type, one or a plurality of first fixed positions 114, a screw hole for attachment, and the like. Further, the rear plate portion 120 is formed with one or a plurality of second fixed positions 122, screw holes for attachment, and the like.
  • a metal plate-like material is pressed to form a plurality of surfaces provided between the front plate portion 110 and the rear plate portion 120, and an air chamber is formed together with the front plate portion 110 and the rear plate portion 120.
  • the side plate portion 130 is bent and formed (S420).
  • the convex reinforcing portion 132 extending in the direction from the front plate portion 110 to the rear plate portion 120 is formed on one or more of the plurality of surfaces of the side plate portion 130 by press working.
  • the side plate portion 130 has a thickness of about 2 mm as an example.
  • the press processing is, for example, a processing such as a squeeze press that three-dimensionally deforms one metal plate.
  • the metal plate includes, for example, a material such as aluminum, stainless steel, or copper.
  • the metal plate-like material is, for example, a plate having a thickness of about 2 mm or less.
  • the side plate portion 130 having the convex reinforcing portion 132 is formed by performing such press working.
  • the side plate portion 130 can retain the stress-strain generated by processing, for example, and when formed as the speaker device 100, the natural vibration of the speaker device 100 can be easily generated.
  • members such as the side plate portion 130 can be automatically mass-produced.
  • An example in which the convex reinforcing portion 132 is formed on the surface of the side plate portion 130 facing the air chamber has been described, but instead of or in addition to this, the convex reinforcing portion 132 is formed on the side plate portion 130. It may be formed on a surface facing the outside.
  • one or more speaker units 140 are attached to the front plate portion 110 (S430).
  • another member such as a columnar member 150 may be attached to the front plate portion 110.
  • the order of the flows from S410 to S430 may be changed. For example, S420, S410, and S430 may be executed in this order, and instead, S410, S430, and S420 may be executed in this order.
  • the front plate portion 110 and the rear plate portion 120 are attached to the side plate portion 130 (S440).
  • the columnar member 150 may be attached to predetermined positions of the front plate portion 110 and the rear plate portion 120.
  • other members such as an amplifier circuit and a filter circuit may be further attached to the inside of the side plate portion 130.
  • the speaker device 100 according to the present embodiment can be easily manufactured.
  • the speaker device 100 has described an example in which the speaker unit 140 is attached to the front plate portion 110, but the present invention is not limited to this.
  • the speaker unit 140 may be attached to the side plate portion 130.
  • the shape of the speaker device 100 has been described as the shape of a cube, the present invention is not limited to this.
  • the speaker device 100 may have a complicated shape that forms an air chamber with more than six surfaces, or may have a curved surface or the like.
  • the speaker unit 140 may have a configuration of only the woofer 142, for example, and may have a configuration of only the woofer 142 and the scooka 144 instead.
  • the speaker device 100 has been described as a bass reflex type configuration example having an opening 112, but the present invention is not limited thereto.
  • the speaker device 100 may not have the opening 112.
  • the speaker device 100 according to the present embodiment described above has described an example in which the convex reinforcing portion 132 and the columnar member 150 are provided, but the present invention is not limited thereto.
  • the speaker device 100 may be provided with either one of the convex reinforcing portion 132 and the columnar member 150.
  • the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the gist thereof. is there.
  • the specific embodiment of the distribution / integration of the device is not limited to the above embodiment, and all or a part thereof may be functionally or physically distributed / integrated in an arbitrary unit. Can be done.
  • Also included in the embodiments of the present invention are new embodiments resulting from any combination of the plurality of embodiments. The effect of the new embodiment produced by the combination has the effect of the original embodiment together.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
PCT/JP2019/038925 2019-10-02 2019-10-02 スピーカ装置およびスピーカ装置の製造方法 Ceased WO2021064896A1 (ja)

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PCT/JP2019/038925 WO2021064896A1 (ja) 2019-10-02 2019-10-02 スピーカ装置およびスピーカ装置の製造方法
JP2021550840A JPWO2021064896A1 (https=) 2019-10-02 2019-10-02

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PCT/JP2019/038925 WO2021064896A1 (ja) 2019-10-02 2019-10-02 スピーカ装置およびスピーカ装置の製造方法

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230797A (ja) * 1984-04-28 1985-11-16 Mitsumoto Shokai:Kk スピ−カ−ボツクス
JPS61152198A (ja) * 1984-12-26 1986-07-10 Hitachi Ltd スピ−カシステム
JPS62137000A (ja) * 1985-12-10 1987-06-19 Sawafuji Dainameka Kk ド−ム形圧電スピ−カ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1084594A (ja) * 1996-09-10 1998-03-31 Masahiro Ogawa バッフル板を薄板としたスピーカーユニット
JP2002247676A (ja) * 2001-02-21 2002-08-30 Daiwa Mark Co Ltd スピーカー装置
JP4059259B2 (ja) * 2005-06-30 2008-03-12 ヤマハ株式会社 スピーカシステムおよびスピーカエンクロージャー

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230797A (ja) * 1984-04-28 1985-11-16 Mitsumoto Shokai:Kk スピ−カ−ボツクス
JPS61152198A (ja) * 1984-12-26 1986-07-10 Hitachi Ltd スピ−カシステム
JPS62137000A (ja) * 1985-12-10 1987-06-19 Sawafuji Dainameka Kk ド−ム形圧電スピ−カ

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